80% chance for a 2.5 ad ratio attack with a 0.6 second cooldown with just 8.6k gold

The other 20% is just a 1.0 ad ratio attack, so it averages out to 2.2 ad ratio on a 0.6 second cooldown. Does anyone else see how ridiculous this sounds? ADC damage needs to be fucking gutted into the ground. If an assassin had these figures he would be instantly gutted into trash tier. Most assassin and mage combos get outdamaged by 2 crits from an adc. Except for the fact that the mage and assassin have cool downs. Meanwhile the adc can constantly pump out this level of damage throughout a fight from range. Let's not forget that other damage classes have much more expensive itemization yet they can't remotely reach the levels of damage crit adc output. This is what I am talking about when I mention "burst per second".